Lunt 50mm (Old Etalon) H-Alpha Double Stack Filter (LS50FHa)

Lunt 50mm (Old Etalon) H-Alpha Double Stack Filter (LS50FHa)This uses the old etalon design and will sell until out of stock. New options available on the site. The Lunt LS50FHa Solar Filter is a 50 mm aperture (no central obstruction) integrally tuned etalon for use on Lunt ED Refractors. Lunt Solar will be introducing a larger selection of ED Telescopes that will meet your Solar needs for Daytime observing and meet the additional requirements of Nighttime observing. In this way you can use one scope for day

55mm back focus

It is optimized for sensors with up to a 22mm diagonal

The touchstone for contemporary stargazers

The Celestron 9x50 RACI Finder comes with a sturdy bracket consisting of two rings and an integrated dovetail

and smaller exit pupil (for a darker background to enhance contrast) reveals a deep sky experience "even better than you imagined"

You can enjoy better views from your telescope by simply swapping out its diagonal for a premium one

25" IRK25 is the fully coated glass reticle Kellner eyepiece used on all Antares illuminated finderscopes

Cometron 7x50mm’s rubberized aluminum housing is durable

Coatings and Prisms

you can bring celestial objects into sharp

3 injection molded centering-bolts with threaded brass inserts to center the filter-cell in front of the tube opening

the most advanced astronomy software suite provided with any consumer-grade telescope